1421177742 has 24 divisors (see below), whose sum is σ = 3081339144. Its totient is φ = 473399664.

The previous prime is 1421177731. The next prime is 1421177759. The reversal of 1421177742 is 2477711241.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1421177697 and 1421177706.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 433 + ... + 53315.

It is an arithmetic number, because the mean of its divisors is an integer number (128389131).

Almost surely, 2^1421177742 is an apocalyptic number.

1421177742 is an abundant number, since it is smaller than the sum of its proper divisors (1660161402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421177742 is a wasteful number, since it uses less digits than its factorization.

1421177742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54384 (or 54381 counting only the distinct ones).

The product of its digits is 21952, while the sum is 36.

The square root of 1421177742 is about 37698.5111377094. The cubic root of 1421177742 is about 1124.3015231684.

Adding to 1421177742 its reverse (2477711241), we get a palindrome (3898888983).

The spelling of 1421177742 in words is "one billion, four hundred twenty-one million, one hundred seventy-seven thousand, seven hundred forty-two".